一种基于ArcView的实现林分可视化的方法

对浙江省天目山国家级自然保护区内的针阔混交林采用相邻网格调查方法，用全站仪、围尺和生长锥等器材获得每木的空间数据和属性数据。首先，利用地理信息系统软件ArcView，对空间数据进行坐标变换；然后，建立样地数字高程模型（DEM）。实践得知，经过ArcView中的反距离加权法插值，并利用不规则三角网（TIN）模型得到的地形更逼近于地形表面；再利用Photoshop处理实地拍摄的树木照片，提取树木符号，导入ArcView中实现树木可视化；最终，将地形和树木叠加实现林分可视化。图8表2参10

A method of realizing stand visualization based on ArcView

Stand visualization is difficult, because the structure of forest is very complex and various. The existing software include SmartForest, stand visualization system （SVS）, EnVision and Visual Forest, but they are not perfect. We want realize stand visualization based on ArcView, which is geographic information system （GIS） software, in order to provide technical support for nature reserve protection, restoration and reconstruction. A typical plot of 100 m × 100 m in conifer broadleaved mixed forest of Tianmu Mountain National Nature Reserve, was investigated with adjacent grid, research instrument including total station, steel tape and increment borer were used to get spatial data and attribute data of each tree. First, coordinate transform of spatial data were taken in ArcView. Then, the digital elevation model （DEM） was established. Practice proved that the terrain which created through inverse distance weighted interpolation （IDW） and triangulated irregular network （TIN） model was good. The real tree photos were dealt with Photoshop to draw the tree symbols and realize the tree visualization by loading trees symbol into ArcView. Finally, stand visualization was realized. Ch, 8 fig. 2 tab. 10 ref. ]